How I can answer this question, NO LINKS, if you answer correctly I will give u brainliest!

Answer:
[tex]4.82*10^{-4}[/tex]
Step-by-step explanation:
Hi,
Your first question would be what is scientific notation and how to express it into numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.
A negative scientific notation is when you multiply the number normally by write it over 1 such 6.5 x 10^-8 would be 6.5/100000000. Which would be 0.000000065:
Now let’s go on with the question:
1. [tex]8.2 / 100000[/tex]
- I wrote it this way because it is a negative scientific notation:
2. [tex]0.000082[/tex]
- I have simplified this question into the following:
3. Now we need to add but I would like to convert this into a decimal:
[tex]0.000082 + 0.0004 = 0.000482[/tex]
4. Now I add them and convert them into a scientific notation!
[tex]0.000482[/tex]
5. Now let’s convert this into scientific notation!
[tex]4.82*10^{-4}[/tex]